Core-machine



(No Model.)

A. MAUSER & a. G. RICHMOND.

GORE MACHINE.

No. 376,155. Patented Jan 10,1888.

Fig.3.

' Fig.4.

Inventor's:

y N PETERS. Phnlvljihogrlphur. Wllhinglul. BIC.

Witnesses; 44444 UNITED STATES PATENT CFFICE.

ALFRED MAUSER, OF SING SING, AND GEORGE G. RICHMOND, OF PEEKSKILL, NEWYORK.

CORE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 376,155, dated January10, 1888.

Application filed April 30, 1887.

T aZZ whom it may concern.-

is a specification.

Ourinvention relates to the making of greensand cores used in castingpipes, and has for its object the making of them expeditiously, with auniform thickness and density of the sand.Weattaintheseobjectsbythemeansillustrated in the accompanying drawings,in which similar letters refer to like parts throughout the severalviews.

Figure 1 represents a front elevation of our machine; Fig. 2, a verticalsection of the lefthand part of Fig. 1 through the line 00. Fig. 3 is atop view of the shaker, and, Fig. 4 represents a core barrel andscraper.

A stout frame, about six feet high and of a length to accommodate thelongest core barrels to be used, is made to carry all the parts enteringinto the construction of our machine. The top of the frame supports ahopper, a, into which the sand for making thecores is thrown. Thishopper has a narrow opening at the bottom, as shown at b, Fig. 2, andmeans may be employed for graduating said opening.

- In the illustration, Fig. 2, one of the sides of the hopper, as c, ismade to slide between the cleats d d, and by raising the sidec thethroat b is enlarged, or is lessened by pushing the side a downward.Just below the hopper a rocking shelf 'or shaker, e, is hinged to theback side of the frame. The shaker may bea plain board provided at theends with trunnionsf", as shown in Fig. '3, which trunnions aresupported in the notches h in the plates 6,

which are secured to theframe, as shown in Fig. 2. Across the front ofthe shaker (see Fig. 3) a narrow piece, j, is attached in such a manneras to leave a'longitudinal opening, k, the full length of the opening inthe bottom of the hopper. Sides, as at Z Z, are provided on the shakerto prevent sand working off at the ends. is centrally located, as shownin Fig. 1, and is hinged to the frame at n, as shown in Fig. 2.

Beneath the shaker a rocking-arm, m,

Serial No. 236,739. (No model.)

The outer end of this arm supports the shaker e, and on its under sideis provided with a tooth, 0,- w-hich rests upon the cam p. Said cam isrevolved by a shaft, q, which has bearings T1" in the sides of the mainframe, as repg resented in Fig. 1. The shaft may be operated by a crank,as at s, or a pulley for the application of power may be attached in theplace of the crank. It is also plain that gearing may be applied to givesuch speed as may be requisite.

Below the shaft, at a distance which may vary in practice, brackets, asat t, are supported by the main frame. The brackets are provided withjournal-bearings, which receive the core-barrel on which the core istobe made. A core-barrel is represented in Fig. 4 which has the generalcontour of the core tobe made, and is provided with cxtcusionsu u,whichlie in the journal-bearings in the brackets t. n represents awooden plug thrust into the end of the barrel, and to this plug a.crank, s", is fastened. By means of the crank the barrel is revolvedwhile the sand is being applied to it. w, Figs. 1, 2, and 4,representsaseraper,which is also supported on the brackets t, and itsobject is to remove superfluous sand and give to the core a round anduniform surface. The space between the scraper w and the barrel z (shownin Fig. 4) represents the thickness of the sand forming the core.

In place of the crank 8 for revolving the core-barrel, a pulley may besubstituted, and may be driven from a pulley on the shaft q by anordinary or a chain belt, as shown by dotted linesy Fig. 2.

The operation of the machine is as follows. The core-barrel is dampenedupon the surface. The core-sand is thrown into the hopper, and fallsthrough the throat b onto the shaker e. As the crank s is rotated thecam 10 causes a gradual rising and sudden falling or dropping of theshaker, which causes a gravitation of the sand toward the opening is.Through the opening it falls with considerable force, given it by thesudden drop of the shaker, and in falling it strikes upon the dampenedcore-barrel. and asthe barrel is revolved the sand is received upon allits sides until a sufficient depth The sand readily packs upon thebarrel,

has been impacted upon it. The scraper w insures a uniform thickness anda smooth surface of sand.

The arm at may be dispensed with and the tooth 0 be attached directly tothe under side of the shaker a; but we obtain a more satis factorymovement of the shaker by the use of the said arm.

The machine may be used without the hop per by throwing the sanddirectly upon the shaker; but such use would not be advantageous.

Having described our invention, what we claim, and desire to secure byLetters Patent, 1s

1. In a machine for making green-sand cores, the combination, in asupportingfranie, ot' a sand-hopper, a, a shaker, c, beneath the hopper,provided with an aperture, k, and vibrated by an arm, an, and camp, witha corebarrel supported under the aperture in the shaker at a verticaldistance below said aperture to cause theimpacting of the sand on thecore-barrel by gravity and the impulse given to the sand by the throwingoperation of the shaker, substantially as set forth.

2. The combination, in a core-machine, ot' the frame a hopper a, shakere, provided with an aperture, 1;, and supported by trunnions f,vibrating arm at, and cam p, shaft q, and corebarrel support t,substantially as herein described.

3. The combination, in a core-machine, of the frame a a a shaker 0,having the aperture k and supported by trunnionsf notched plates 2', armm, hinged at n, tooth 0, cam 12, shaft q, pulleys and belt y 3core-barrel z, scraper w, and bracket t, substantially as shown anddescribed.

4. The combination, in a core-machine, of a shaker, 6, provided with anaperture, is, and suspended by trunnionsf", an arm, m, hinged at a,tooth 0, and cam 12, operated by shaft (1, substantially as shown.

Signed at Sing Sing. in the county of West.- chester and State of NewYork.

ALFRED MAUSER. GEO. G. RICHMOND.

\Vitnesses:

O. H. CUMMING, W. A. SENGER;

